Gartner Expert

Leigh McMullen

Distinguished VP Analyst

Leigh C. McMullen is a Distinguished Vice President, Analyst and Gartner Fellow in Gartner's CISO, Security & Risk Management team. Mr. McMullen leverages his experience as both a line-of-business manager and IT leader to provide CISOs with insight on navigating and making a difference within the C-suite.

Additionally, he provides clients with a holistic view of executive management leadership research, specializing on the topics of politics, influence, culture, business engagement, internal selling, marketing & communications. Mr. McMullen's Fellows work, the Delta Business Operating System examines business operating models which are designed to change and adapt rather than just scale.

Previous experience

Mr. McMullen is an executive with a diverse background that enables him to engage clients in a variety of disciplines and to speak from experience regarding the challenges of both making a profit and supporting the business with IT. He has held a variety of business and IT roles, ranging from line-of-business/P&L manager to CTO.

Professional background


Practice Vice President

Capgemini Ernst & Young

Vice President

HomeBanc Mortgage

Senior Vice President, Chief Architect

Areas of coverage

CIO Technology and Innovation Leadership

Executive Leadership: Digital Business

Executive Leadership: Talent

Executive Leadership: Strategic Risk Management

Executive Leadership: Executive Communications

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Top Issues That I Help Clients Address

1How to navigate and build influence within the C-Suite / Board.

2How Executives can market their ideas and themselves

3Developing high-performing, impactful leaders

4Cultivating a high performing, innovative future-ready culture.

5What is the future of business operating systems